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杭州钢铁厂炼铁分厂球团车间D-700-13型高压鼓风机,是球团生产的主要设备。运行中发出的噪声高达102～109分贝(A),在强烈噪声下作业的工人头晕脑胀,听觉迟钝;附近居民在晚间难于入眠。1980年我们对风机进气室、机房、送风管道等噪声源,采取了消声、隔声、吸声等技术措施。经综合治理后,距进气室4米处噪声由89分贝(A)降到54分贝(A),风机房噪声由105～109分贝(A)降到86～95分贝
Iron and steel plant in Hangzhou Iron and Steel Plant Pellet Workshop D-700-13-type high-pressure blower, pellet production is the main equipment. The noise emitted during operation is as high as 102 to 109 dB (A), and workers who work under intense noise are dizzy and suffer from drowsiness; nearby residents find it hard to sleep at night. In 1980, we took noise measures such as noise reduction, sound insulation, sound absorption and other noise sources to the air intake room, engine room and air supply duct of the fan. After comprehensive treatment, the noise from the inlet air chamber at 4 meters was reduced from 89 dB (A) to 54 dB (A), and the noise in the air-conditioned room decreased from 105 to 109 dB (A) to 86 to 95 dB